Flexural Vibration Band Gap Characteristic of Double Periodic Structure Beams

2017 4th International Conference on Advanced Materials, Mechanics and Structural Engineering

材料科学;机械制造

Ning, Ronghui^1 ; Zhang, Zhenhai^2

College of Power Engineering, Naval Univ. of Engineering, Wuhan

430033, China^1

National Key Laboratory on Ship Vibration and Noise, Wuhan

430033, China^2

关键词: Centre frequency;    Complex band structures;    Flexural vibrations;    Mechanical structures;    Spectral element method;    Structural beams;    Structural characteristics;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/269/1/012039/pdf
DOI  :  10.1088/1757-899X/269/1/012039

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A double-periodic structural beam is designed. The complex band structure of the structure is deduced by spectral element method. The influence of the length of the third element on the band gap characteristics of the double-periodic structural beam is studied. The results show that the double-periodic structure beams can reduce the band gap frequency, but it will affect the bandwidth of the band gap while maintaining the structural characteristics of the mechanical structure. The length of the third element has little effect on the centre frequency of each band gap, but it will affect the band gap bandwidth.